Debugger and Profiler Tool for PHP

Derick Rethans, as in derick@xdebug.org

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Xdebug is an extension for PHP, and provides a range of features to improve the PHP development experience.

Step Debugging: A way to step through your code in your IDE or editor while the script is executing.
Improvements to PHP's error reporting: An improved var_dump() function, stack traces for Notices, Warnings, Errors and Exceptions to highlight the code path to the error
Tracing: Writes every function call, with arguments and invocation location to disk. Optionally also includes every variable assignment and return value for each function.
Profiling: Allows you, with the help of visualisation tools, to analyse the performance of your PHP application and find bottlenecks.
Code Coverage Analysis: To show which parts of your code base are executed when running unit tests with PHPUnit.

Xdebug Cloud is a Proxy-as-a-Service, which can help you with complexities with regards to networking. A common use case is having multiple developers, who share a common development server on private network, while working in a remote location.

» Xdebug Cloud Website